Malicious PDF — malware analysis report

Static analysis result for SHA-256 82fb62335fe2b5c3…

MALICIOUS

PDF

56.2 KB Created: 2020-08-04 16:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79a7c9731c1ce2978d6a53761b860452 SHA-1: b629e8d6e43f9fb5365b2471774f20057adce58b SHA-256: 82fb62335fe2b5c3720829eb24dfc84ddfd3fc5be03e235613f8b17c80f5f35d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to host a link farm for SEO-based phishing. The primary malicious URL, https://ttraff.com/pify?keyword=cours+dissection+aortique+pdf, is embedded within the document body and flagged by multiple critical heuristics. The document's purpose appears to be to trick users into downloading further content via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=cours+dissection+aortique+pdf In PDF document text
    • http://files.maltafpd.com/uploads/1/3/0/7/130739081/6135384.pdfIn PDF document text
    • http://files.markallisonart.com/uploads/1/3/0/9/130969498/donanixu.pdfIn PDF document text
    • http://files.lavishexcursions.com/uploads/1/3/0/7/130739004/1553151.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/16910739947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/28873511650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/nuxativapil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/jalobamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6558/1469/files/dizinokerumozekagudorun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/bulovevusidanev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9529/files/zagufigugunag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/xiwezexirininotuwonel.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E95 5148 bytes
SHA-256: 82cd4a279df0c57c0b5b294f1d781019017efaf2e30d3212171f016f5be80d65
font_01_sfnt_off00009025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9025 14904 bytes
SHA-256: e9d5aa2bf49ddbdd332338ba77e6969e97f6e3c750b7ddf7e666461d5370d72b
font_02_sfnt_off0000be46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE46 16196 bytes
SHA-256: ebd57d2a71d2a95b03cf44eeaee6144b2d4f881d5528b25618ee60816730c40d

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